Abstract
In prior work [J. Acoust. Soc. Am. 132(3), 2074 (2012)], we experimentally demonstrated the feasibility of releasing compressed air through a rotating ball valve to create infrasound. The present paper seeks to analyze and model those as well as new outdoor measurements, with a view toward establishing a viable theoretical model of the process. Functions involving propagation and the response to frequency, source pressure, and signal type (tone burst and transient) are examined, as is the potential utility of the method in calibration and test applications. [Work supported by ARL:UT Austin.]
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